<template>
  <div class="login_container">
    <!-- 登录盒子 -->
    <div class="login_box">
      <!-- 头像 -->
      <div class="avatar_box">
        <img src="../assets/4.jpg" alt />
      </div>
      <!-- 登录表单区域 -->
      <el-form
        ref="loginFormRef"
        :model="loginForm"
        label-width="0px"
        class="login_form"
        :rules="loginFormRules"
      >
        <!-- :model 给form表单绑定数据 -->
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginForm.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input
            prefix-icon="iconfont icon-3702mima"
            v-model="loginForm.password"
            type="password"
            @keyup.enter.native="login"
          ></el-input>
        </el-form-item>
        <!-- 按钮区域 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginForm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  data() {
    return {
      //登录表单的数据绑定对象
      loginForm: {
        username: "admin",
        password: "123456",
      },
      //登录表单的验证规则对象 要放在data里
      loginFormRules: {
        //用户名的验证规则
        username: [
          { required: true, message: "请输入登录名称", trigger: "blur" },
          {
            min: 3,
            max: 10,
            message: "长度在 3 到 10 个字符",
            trigger: "blur",
          },
        ],
        //密码的验证规则
        password: [
          { required: true, message: "请输入登录密码", trigger: "blur" },
          {
            min: 6,
            max: 15,
            message: "长度在 6 到 15 个字符",
            trigger: "blur",
          },
        ],
      },
    };
  },
  methods: {
      //重置登录表单
      resetLoginForm() {
          this.$refs.loginFormRef.resetFields()
      },
      //实现登录前表单数据的预验证
      login() {
          this.$refs.loginFormRef.validate(async (valid) => {
            //   console.log(valid); //true or false 
            if (!valid) return;
            //验证成功,发起请求
            // const res = this.$http.post("login",this.loginForm)
            // console.log(res); //Promise类型的数据,所以通过async和await获取异步数据
            const {data:res} = await this.$http.post("login",this.loginForm)
            // console.log(res);
            if (res.meta.status !== 200) return this.$message.error("登录失败! ");
            this.$message.success("登录成功")
            //登录成功后将用户的token保存到浏览器的sessionStorage里
            window.sessionStorage.setItem('token',res.data.token)
            //通过编程式导航跳转到后台主页
            this.$router.push("/home")
          })
      }
  }
};
</script>
<style lang="less" scoped>
.login_container {
  background-color: #409eff;
  height: 100%;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color:#f56c6c;
  border-radius: 3px;
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  .avatar_box {
    width: 130px;
    height: 130px;
    border: 1px solid #eee;
    border-radius: 50%;
    padding: 10px;
    box-shadow: 0 0 10px #f56c6c;
    position: absolute;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color:pink;
    img {
      width: 100%;
      height: 100%;
      border-radius: 50%;
      background-color: #eee;
    }
  }
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
</style>